WO2021255950A1 - Appareil d'induction fixe à noyau à empilement et son procédé de fabrication - Google Patents

Appareil d'induction fixe à noyau à empilement et son procédé de fabrication Download PDF

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Publication number
WO2021255950A1
WO2021255950A1 PCT/JP2020/038600 JP2020038600W WO2021255950A1 WO 2021255950 A1 WO2021255950 A1 WO 2021255950A1 JP 2020038600 W JP2020038600 W JP 2020038600W WO 2021255950 A1 WO2021255950 A1 WO 2021255950A1
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magnetic material
yoke
leg
induction device
material member
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PCT/JP2020/038600
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English (en)
Japanese (ja)
Inventor
尊雄 今川
誠 舘村
孝平 佐藤
俊明 高橋
晶 中島
浩幸 三上
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株式会社日立産機システム
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Publication of WO2021255950A1 publication Critical patent/WO2021255950A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets

Definitions

  • the present invention relates to a stationary iron core stationary induction device and a method for manufacturing the same.
  • a static induction device such as a transformer
  • a static induction device for a steel core in which a block body in which amorphous thin strips are laminated or an electromagnetic steel plate is stacked to form an iron core composed of a leg portion and a yoke portion.
  • a frame type and a strip type as the iron core structure of the stacked iron core guiding device.
  • the frame type as the magnetic material of the leg portion and the yoke portion, a material having an oblique end face shape such as a trapezoidal shape is used, and the diagonal end faces are connected to each other to form a stacked iron core.
  • the static induction device after assembly is more efficient than the strip type, but it is necessary to cut the magnetic material diagonally, which complicates cutting and assembling and increases the manufacturing process.
  • the strip type a rectangular parallelepiped strip-shaped magnetic material is used as the magnetic material of the leg portion and the yoke portion to form a stacked iron core. Compared to the frame type manufacturing process, the strip type is easier to cut the magnetic material and requires fewer manufacturing steps.
  • Patent Document 1 states that "a unit polymer is formed by cutting a strip polymer made of a stack of strips of a plurality of amorphous magnetic alloy foils to a predetermined length. Unit weights are sequentially formed. A laminated block of unit polymers is formed by stacking the coalesced products at different positions in the length direction. The unit polymers constituting the laminated block are taken in order from the top and stacked on a work table. It forms the legs and joints of the iron core. "(See summary).
  • Patent Document 1 discloses a method for manufacturing an amorphous steel core with improved work efficiency by making it possible to easily form a unit polymer composed of a polymer of a ribbon of an amorphous magnetic alloy foil.
  • the efficiency of the manufacturing method is considered, not the efficiency of the transformer or the static induction device after assembly.
  • An object of the present invention is to provide an easy-to-manufacture strip-shaped and efficient product core static induction device and a method for manufacturing the same.
  • the leg portion having a winding and the yoke portion having no winding are formed of a strip-shaped magnetic material member, and form a stacked iron core which is abutted against each other.
  • the leg portion and the yoke portion are formed by laminating a plurality of iron core block bodies in which a plurality of the magnetic material members are arranged in the short side direction, and the leg portion and the yoke portion are formed by laminating a plurality of iron core blocks.
  • the end portion of the magnetic member includes a layer of the iron core block body displaced in the long side direction, and one of the abutting portions of the leg portion and the yoke portion with respect to the end portion of the central leg portion.
  • a part of the yoke portion is located in the region formed by the displacement of the magnetic member in the leg portion at the central three intersections where the ends of the yoke portion are abutted from the side and the other side, and the yoke portion is located.
  • a part of the leg portion is located in the region where the magnetic member is displaced.
  • a method for manufacturing a steel core static induction device in which a leg portion having a winding and a yoke portion having no winding are formed of a strip-shaped magnetic material member and abutted against each other to form a stacked iron core.
  • the center of the step of forming the leg portion and the yoke portion by laminating a plurality of iron core block bodies in which the plurality of magnetic material members are arranged in the short side direction and the abutting portion between the leg portion and the yoke portion.
  • the yoke portion is located in a region generated by the displacement of the magnetic member in the legs.
  • a step is provided in which a part of the leg portion is positioned in a region of the yoke portion where the magnetic material member is displaced.
  • FIG. 1st layer of the product core used in the product core static induction device of the first embodiment It is a figure which shows the structure of 6 kinds of blocks. It is a front view of the 2nd and subsequent layers of the steel core of Example 1.
  • FIG. It is a figure which showed the calculation result of the magnetic flux density which was DC excited at the side 2 intersection part. It is a figure which showed the structure of the side 2 intersection part of the product core of Example 1.
  • FIG. It is a figure which shows the calculation result excited to the side 2 intersection part of Example 1.
  • FIG. It is a figure which shows the structure of the product core of Example 2.
  • FIG. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 50. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 51. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 51s. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 52. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 52s.
  • FIGS. 13A and 13B are views showing a conventional stacked iron core type
  • FIG. 13A is an example of a frame type iron core
  • FIG. 13B is an example of a strip type iron core.
  • a magnetic material member having an end face shape such as a trapezoid or a hexagon is used for the leg portion 5
  • a magnetic material member having a trapezoidal shape with a notch is used for the yoke portion 6.
  • Each of the diagonal end faces is connected to form a frame-shaped steel core.
  • the position of the gap which is the abutment portion between the leg portion 5 and the yoke portion 6, is provided so as to be staggered between the upper layer and the lower layer in which the layers are laminated to improve the flow of magnetic flux between the upper and lower layers and increase the height. It may improve efficiency.
  • the primary and secondary coils 7 are wound around the leg portion 5.
  • the frame type has higher efficiency in iron core characteristics than the strip type, but it is necessary to cut the magnetic member diagonally, and the number of member shapes is large, so cutting the magnetic material and assembling the stacked iron core are complicated.
  • the leg portion 5 means an iron core member having a region around which the coil is wound
  • the yoke portion 6 means an iron core member having no region around which the coil is wound.
  • a rectangular parallelepiped strip-shaped magnetic member is used for the legs 5 and the yoke 6, and the ends of the strips are butted against the sides of the other strips. Arrange them to form a three-legged steel core.
  • the indicated iron core combination is set as one layer, and this layer is stacked upside down in units of one or two layers so that the gap positions are not concentrated, and the flow of magnetic flux between the upper and lower layers. We are trying to improve efficiency.
  • the strip type is easy to manufacture and assemble because it uses a strip-shaped magnetic member, but the end face of the member is perpendicular to the magnetic path, a large amount of magnetic poles are generated, and a large demagnetic field is generated. Therefore, the efficiency is lower than that of the frame type.
  • amorphous strips with good characteristics and small thickness are used instead of electrical steel sheets. It is suitable because the thickness is small and the eddy current is also small.
  • Transformers using amorphous strips in the current market are of the winding core type, while in order to be used for large transformers, it is necessary to use the stacked iron core type.
  • the width of the amorphous strip is determined by the standard, but there is no wide one suitable for a large transformer as compared with the magnetic steel sheet.
  • the amorphous strip is manufactured by pouring a heated and melted member into a low-temperature roller and spreading it, and it is generally difficult to manufacture a wide amorphous strip due to the manufacturing principle thereof.
  • the present invention provides a strip-shaped, easy-to-manufacture, and efficient three-phase stacked iron core transformer.
  • examples of the present invention will be described with reference to the drawings.
  • the same constituent elements are given the same name and reference numeral as much as possible, and the repeated description thereof will be omitted.
  • the first embodiment of the present invention will be described with reference to FIGS. 1 to 12.
  • the stacked iron core stationary inducer according to the first embodiment is formed by stacking a plurality of iron core block bodies in which two strip-shaped magnetic members are arranged in the short side direction in a leg portion and a yoke portion.
  • FIG. 1 is a diagram showing the first layer of a steel core used in the three-phase product core static induction device of this embodiment.
  • the leg portion 5 and the yoke portion 6 of this embodiment are formed of any of five types of iron core blocks a, b, c, d, and e, and these are abutted against each other to form a stacked iron core. It is composed.
  • the central 3 crossing portion is a portion where the end portion of the yoke portion 6 is abutted from one side (right side) and the other side (left side) with respect to the end portion of the central leg portion 5', and the side 2 crossing portion.
  • the portion is a portion where the end portion of the yoke portion 6 is abutted against the lateral (right side or left side) leg portion 5.
  • the iron core opening is a square having a length L.
  • FIG. 2 is a diagram showing the configuration of six types of blocks a to f, which are the basics.
  • Each block is formed by joining magnetic members 11 and 12 which are foils having a material width w at the center, and a to f have different length combinations.
  • the block a is adjacent to a rectangular first magnetic member 11 having a width w and a length L and a rectangular second magnetic member 12 having a width w and a length L + 2w so that both ends are w. It is joined at the joint portion 13 at the center of the facing surface.
  • b to e are blocks in which two magnetic material members having a width w are combined and joined so as to have a shift width w.
  • f is a block in which two L + w rectangular magnetic members are joined.
  • the joining method is not limited, but if it is a joining method such as spot welding in which the joining portion does not have a thickness, the space factor of the iron core can be improved because the joining portion does not have a thickness. Further, since the joint portion is not thick, the position shift is less likely to occur in the process of stacking the iron core blocks, and the productivity is improved. Using these, the following laminated body was constructed.
  • FIG. 3 is a diagram showing the second and subsequent layers of the steel core of this embodiment. As shown in FIG. 3, the second layer and the third layer have different arrangements from the first layer shown in FIG.
  • the fourth layer is the same as the second layer
  • the fifth layer is the same as the first layer
  • the sixth layer is the same arrangement as the third layer
  • these six layers, in which three types of layers are repeatedly laminated, are the constituent units. Become.
  • the leg portion and the yoke portion are the first magnetic material member and the second magnetic material member longer than the first magnetic material member. It has a magnetic material member. Then, on the end surface of one of the first magnetic material member and the second magnetic material member of the leg portion or the yoke portion, the side surface of the other first magnetic material member and the second magnetic material member of the leg portion or the yoke portion has a stepped shape. Have been dating.
  • the legs and the yoke are formed of a block body in which the ends of the magnetic member are displaced in the long side direction. Contains layers. Then, a part of the yoke portion is located in the region where the magnetic material member is displaced in the leg portion, and a part of the leg portion is located in the region where the magnetic material member is displaced in the yoke portion.
  • the materials of the magnetic members 11 and 12 may be amorphous alloy foil pieces or electromagnetic steel sheets.
  • the terms amorphous strip, amorphous alloy foil piece, amorphous alloy strip, etc. are referred to, but all of them refer to the amorphous strip.
  • the magnetic material member may be a clad material in which an amorphous foil piece and an electromagnetic steel sheet or a nanocrystal foil are laminated, or may be a thin band of a nanocrystal foil alone.
  • the amorphous foil piece is thinner than the thickness of the electrical steel sheet, and is about one tenth the thickness of the electrical steel sheet.
  • the iron core block body can be handled in the same manner as an electromagnetic steel sheet.
  • the characteristics of the iron core can be improved by forming the iron core block body obtained by joining the two magnetic material members 11 and 12 of the amorphous thin band and laminating them alternately. Further, when about 10 to 20 pieces of the joined pieces are stacked to form an iron core block body, the iron core block body can be combined for each iron core block body at the time of manufacturing, so that the productivity is improved. The reason for such a configuration will be described below.
  • FIG. 4 is a diagram showing the calculation results of the DC-excited magnetic flux density at the two side intersections.
  • the iron core is made by bundling 10 pieces of amorphous foil having a width of 170 mm as one layer and stacking them in two upper and lower layers.
  • (A) is a frame and (b) is a strip structure.
  • the exciting coil was set to 20 turns and the current was set to 4 A.
  • the magnetic flux was recirculated between the foils on the opposite side of the intersection with an iron plate having a thickness of 20 mm.
  • the average magnetic flux density values were compared with the cross section 55 mm from the exciting coil as the calculated position.
  • FIG. 5 is a diagram showing the structure of the lateral 2 intersections of the product core 1 of this embodiment.
  • a leg made of a second iron core block body 35 is attached to the end faces of the first magnetic body member 31 and the second magnetic body member 32 in the yoke portion made of the first iron core block body 30.
  • the side surfaces of the first magnetic material member 36 and the second magnetic material member 37 in the portion are attached to each other in a staircase shape.
  • a yoke composed of the first iron core block body 30 is attached to the end faces of the first magnetic material member 36 and the second magnetic material member 37 in the leg portion composed of the second iron core block body 35.
  • the side surfaces of the first magnetic material member 31 and the second magnetic material member 32 in the portion are attached to each other in a staircase shape.
  • the blocks having a single width of 85 mm, which is 1/2 of the width of 170 mm of the foil of FIG. 4, are shifted by a length of 85 mm and joined, and the blocks are arranged alternately.
  • FIG. 5 (b) was used as the lower layer, and the excitation calculation was performed in the same manner as in FIG.
  • FIG. 6 is a diagram showing a calculation result excited at two lateral intersections of this embodiment.
  • the region having a low magnetic flux density exists in the portion indicated by the arrow in the upper layer and the lower layer, but the region is smaller than the strip type of FIG. 4 (b).
  • the two layers of FIGS. 5 (a) and 5 (b) should be stacked on the basis of the two lateral intersections.
  • FIG. 7 is a diagram showing a design method at the central 3 intersection.
  • FIG. 7A has a structure in which an amorphous foil having a width of 170 mm is crossed in a T shape and the opposite side of the intersection is refluxed with an iron block having a thickness of 100 mm and a width of 65 mm.
  • the coil is placed 300 mm to the left and right from the center of the intersection of the foil and 150 mm below it, and 200 mm to the right (p1 in FIG. 7, hereinafter “calculated position 1") and 100 mm below (Fig. 7).
  • the average magnetic flux density was measured at p2 of 7 (hereinafter referred to as "calculation position 2").
  • the coil had 20 turns and the current conditions were determined as follows.
  • FIG. 7B shows u, v, w waveforms of three-phase alternating current.
  • the waveform is 120 ° out of phase.
  • the vertical axis intensity is a relative value.
  • the current of one phase becomes 0 at the positions of case 1 and case 2.
  • the case 1 in which direct current is applied to the two coils of the structure (a) and the magnetic flux flows laterally only in the yoke portion and the case 2 in which the magnetic flux flows from the bottom to the right and flows from the leg portion to the yoke portion.
  • the excitation efficiencies were compared by calculating each.
  • the measurement position was set to the intersection side 50 mm from the exciting coil regardless of the case.
  • FIG. 7 is an example of a frame structure.
  • FIG. 8 is a diagram showing the calculation results of Case 1 and Case 2 in the frame structure of FIG. 7.
  • Case 1 as shown in FIG. 8A, the magnetic flux flows through the entire yoke, and the average magnetic flux densities at the calculated positions 1 and 2 are 1.45T and 0.04T, respectively.
  • Case 2 also in Case 2, as shown in FIG. 8B, the flow efficiently flows from the leg to one side of the yoke, and the average magnetic flux densities at the calculated positions 1 and 2 are 1.48T and 1.51T, respectively.
  • FIG. 9 is a diagram showing an example of the central three intersections of the strip-shaped structure.
  • the first layer has a single block on the yoke side and a bundle branch block perpendicular to the block, and the second layer has two blocks on the yoke side. It is divided, the bundle branch block is projected by that amount, and these two layers are combined to form a structure.
  • the average magnetic flux densities of the calculated positions 1 and 2 under the same excitation conditions as in FIG. 8 are (1.24T, 0.03T) in case 1 and (1.23T, 1.34T) in case 2, and are 15 in all cases.
  • the magnetic flux density is small by about%.
  • FIG. 10 is a diagram showing the calculation results excited for the legs at the central 3 intersections when the first layer and the second layer are left-right asymmetric.
  • the legs and yoke are a combination of blocks formed by joining two magnetic members with a width of 85 mm, and the shift positions of the ends of the legs are changed by 85 mm in the upper and lower two layers. ..
  • FIG. 10A shows a structure in which the end faces of the magnetic member on the side far from the leg portion of the end faces of the yoke portion are butted against each other at the shift position of the end portion of the leg portion.
  • FIG. 10B shows a structure in which the end faces of the magnetic member on the side far from the legs of the end faces of the yoke portions are butted against each other at the center of the central three intersections.
  • FIG. 10 (c) shows an intermediate structure between FIGS. 10 (a) and 10 (b).
  • the structure of (b) had a high average magnetic flux density in both cases 1 and 2. From this, it can be seen that the center of the yoke contact is good when the legs are asymmetrical.
  • FIG. 11 is a diagram showing the calculation results excited for the legs at the central 3 intersections when the first layer and the second layer are symmetrical.
  • FIG. 11A shows a structure in which the yoke portions are butted against each other at a position where the end surface of the magnetic member on the side far from the leg portion of the end surface of the yoke portion is 85 mm away from the center of the central 3 intersecting portion. Is shown.
  • FIG. 11B shows a structure in which the end faces of the magnetic member on the side far from the legs of the end faces of the yoke portions are butted against each other at the center of the central three intersections.
  • the structure of (b) had a high average magnetic flux density in both cases 1 and 2. From this, it can be seen that the center of the yoke contact is good even when the legs are symmetrical.
  • FIG. 12 is a diagram showing calculation results excited from the results of FIGS. 10 and 11 when the central 3 intersecting portion has a first, second, and third three-layer structure.
  • the yoke contacts are placed in the center in each case, the legs of the first and second layers are asymmetrical, and the legs of the third layer are symmetrical.
  • the magnetic flux density of both cases 1 and 2 was reduced by 5% from that of the frame type, and the efficiency was good.
  • the optimum structure of the three-phase iron core when the legs and the yoke are composed of the iron core block body in which two strip-shaped magnetic members are arranged in the short side direction is two layers at the two lateral intersections. A combination of three layers is good at the central three intersections. Therefore, if six types of blocks, which are the least common multiples of 2 and 3, as shown in FIG. 2, are used, the iron core can be constructed with as few types as possible. Further, it can be seen that the desired steel core can be realized by repeating the 6 layers shown in FIGS. 1 and 3.
  • an efficient steel core transformer with a strip type that is easy to manufacture. Further, by forming a 6-layer structure in which the positions of the butt portions of the iron core block body are changed between the upper and lower layers, the flow of magnetic flux can be improved and the efficiency can be improved. Further, in this embodiment, since the iron core block body in which two magnetic material members are joined is combined to form a stacked iron core, the production becomes easy.
  • an amorphous foil with a width of 170 mm was separately cut into strips and joined in units of 10 sheets to prepare a strip iron core foil.
  • An iron core B (comparative example) was manufactured so that the strip iron core had a stack thickness of 60 mm with an opening of 170 mm.
  • a 0.7 mm diameter enamel wire is wound around the three legs of the iron cores A and B for 200 turns each, and a separate detection wire is wound around the yoke for 20 turns.
  • the peak magnetic flux density of the yoke part was compared from the winding output. As a result, it was found that the iron core A has a 20% higher peak magnetic flux density than the iron core B, and the strip-shaped iron core of this embodiment has high efficiency.
  • the stacked iron core stationary inducer according to the second embodiment is formed by stacking a plurality of iron core block bodies in which four strip-shaped magnetic members are arranged in the short side direction in a leg portion and a yoke portion.
  • FIG. 15 is a diagram showing the configuration of two lateral intersections in the case of a four-divided iron core.
  • four amorphous pieces are cut back by the width of one of them, and the gap is on the leg 5 side at the four-divided end A and the gap is on the four-divided end B. Combine so that it comes out on the yoke part 6 side.
  • the four-divided end portion A and the four-divided end portion B are combined for each layer or multiple layers to form an iron core.
  • the receding width a should be aligned with the width a of one sheet before joining, whereby the demagnetic field at the end portion is reduced and the efficiency is improved.
  • FIG. 16 is a diagram showing the configuration of a three-phase stacked iron core of this embodiment.
  • the members constituting the iron core it is preferable to arrange them point-symmetrically with respect to the center point of the iron core indicated by the point P. Therefore, in the following, the configuration of the central three intersections will be described by taking the iron core configuration of the right half as an example.
  • FIG. 17 shows a magnetic material on the anti-iron core opening side when the length b of the magnetic material member (hereinafter, the first leg member) on the iron core opening side of the central leg portion 5'is L + a (reference numeral 50). It is a figure which shows the state when the length of a member (hereinafter referred to as a 2nd leg member) is changed.
  • L is the opening width
  • a is the original material width (170 mm in this embodiment).
  • the length of the second leg member needs to be longer than the length of the first leg member. Further, in the case of L + a (length 50), the length of the second leg member needs to be L + 2a (length 51) or more because four end faces of the yoke portions 6 are lined up and the gap length is 4a. There is. Further, when the second leg member has a length of 51, three end faces of the yoke portions 6 are lined up, so that the gap length is 3a. However, when the gap length becomes 3a, the end portion of the material becomes longer with respect to the magnetic path, so that the loss increases. Therefore, in the following, it is decided to determine the suitability of the length and position of the second leg member under the condition of avoiding the gap length of 3a or more.
  • the length of the second leg member is L + 4a (length 53)
  • the upper end surface of the second leg member is arranged so as to travel by a length of 2a from the upper end surface of the first leg member, it can be configured to satisfy the condition.
  • this arrangement is vertically asymmetrical, it is possible to realize two patterns in which the top and bottom are interchanged. Therefore, two types of configurations of 1 ⁇ 2 are possible. The other two methods are unsuitable because the gap length becomes 3a or more above or below the second leg member.
  • the length of the second leg member is L + 5a (length 54)
  • the upper end surface of the second leg member is arranged so as to travel by a length of 2a from the upper end surface of the first leg member, it can be configured to satisfy the condition.
  • this arrangement is vertically asymmetrical, it is possible to realize two patterns in which the top and bottom are interchanged. Therefore, two types of configurations of 1 ⁇ 2 are possible. If the upper end surface of the second leg member has a length of 3a from the upper end surface of the first leg member, the gap length becomes 3a on the side of the second leg member, which is unsuitable.
  • the gap length becomes 3a on the side of the second leg member, which is unsuitable. If the second leg member is longer, the leg portion cuts the yoke portion, which reduces efficiency.
  • the total number of possible configurations is 4.
  • FIG. 18 is a diagram showing a state when the length of the first leg member is L + 2a (reference numeral 51) and the length of the second leg member is changed.
  • L + 3a length 52
  • L + 4a length 53
  • the condition is also satisfied when the length of the second leg member is L + 5a (length 54), but since this arrangement is vertically asymmetric, two patterns can be configured.
  • the condition is also satisfied when the length of the second leg member is L + 6a (length 55), but since this arrangement is vertically symmetrical, one pattern can be configured.
  • the length of the first leg member is L + 2a (length 51)
  • the total number of possible configurations is 4.
  • FIG. 19 is a diagram showing a state when the length of the first leg member is L + 2a (reference numeral 51s) and the length of the second leg member is changed.
  • the length of the first leg member is L + 2a as in the case of FIG. 18, but unlike the case of FIG. 18, the arrangement of the first leg member is shifted downward by the length a.
  • the description of FIG. 19 is omitted, the possible configuration in this case is 4.
  • FIG. 20 is a diagram showing a state when the length of the first leg member is L + 3a (reference numeral 52) and the length of the second leg member is changed. Although the description with respect to FIG. 20 will be omitted, the possible configuration in this case is 8.
  • FIG. 21 is a diagram showing a state when the length of the first leg member is L + 3a (reference numeral 52s) and the length of the second leg member is changed.
  • the length of the first leg member is L + 3a as in the case of FIG. 20, but unlike the case of FIG. 20, the arrangement of the first leg member is shifted downward by the length a.
  • the description with respect to FIG. 21 is omitted, the possible configuration in this case is 0.
  • FIG. 22 is a diagram showing a state when the length of the first leg member is L + 4a (reference numerals 53, 53s) and the length of the second leg member is changed.
  • the possible configuration is 4 when the first leg member is arranged as indicated by reference numeral 53, and the arrangement in which the first leg member is indicated by reference numeral 53s (arrangement shifted downward by the length a from the reference numeral 53).
  • the possible configuration at is 0.
  • FIG. 23 is a diagram showing the state of the second leg member when the length of the first leg member is L + 5a (reference numeral 54) and when the length of the first leg member is L + 6a (reference numeral 55). As shown in FIG. 23, the possible configuration is 0 regardless of whether the first leg member is arranged according to reference numeral 54 or reference numeral 555.
  • FIG. 24 is a table summarizing the determination results of suitability of the configuration for each combination of the length and arrangement of the first leg member and the second leg member described with reference to FIGS. 17 to 23. As shown in this table, the total number of possible configurations at the central 3 intersections is 24. Here, there are two types of patterns at the two lateral intersections. Therefore, the total combination of the central 3 intersections and the side 2 intersections is 24, which is the least common multiple of 24 and 2, and it is desirable to configure the iron core in units of 24 layers.
  • the noise is reduced by 3 dB compared with the rated power of the electromagnetic steel sheet iron core having a width of 550 mm and the same thickness of 200 mm, and the amorphous core of the present embodiment is used. The effect of the iron core was confirmed.

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  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

L'objectif de la présente invention est de fournir un appareil d'induction fixe à noyau à empilement d'un type bande facile à fabriquer et ayant un rendement élevé. À cet effet, la présente invention concerne un appareil d'induction fixe à noyau à empilement comprenant un noyau à empilement dans lequel des parties pattes comportant des enroulements et des parties culasses dépourvues d'enroulement sont formées d'éléments en matériau magnétique en forme de bande et sont en butée les unes contre les autres. Les parties pattes et les parties culasses sont individuellement formées par empilement d'une pluralité de corps de bloc de noyau comprenant chacun une pluralité d'éléments en matériau magnétique disposés dans une direction de côté court. Les parties pattes et les parties culasses comprennent individuellement une couche du corps de bloc de noyau dans laquelle les extrémités des éléments en matériau magnétique sont décalées dans une direction de côté long. Les parties pattes et les parties culasses sont en butée les unes contre les autres dans des parties en butée, comprenant une partie centrale de triple intersection dans laquelle les extrémités des parties culasses sont en butée contre une extrémité de la partie patte centrale d'un côté et d'un autre côté. Dans la partie de triple intersection, une partie des parties culasses est positionnée dans une région de la partie patte découlant du décalage de leurs éléments en matériau magnétique, et une partie de la partie patte est positionnée dans une région des parties culasses découlant du décalage de leurs éléments en matériau magnétique.
PCT/JP2020/038600 2020-06-16 2020-10-13 Appareil d'induction fixe à noyau à empilement et son procédé de fabrication WO2021255950A1 (fr)

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JP2020103752A JP7430115B2 (ja) 2020-06-16 2020-06-16 積鉄心静止誘導機器およびその製造方法
JP2020-103752 2020-06-16

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS399904B1 (fr) * 1963-01-21 1964-06-08

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019087932A1 (fr) 2017-10-31 2019-05-09 日立金属株式会社 Matériau magnétique, matériau magnétique stratifié, paquet stratifié, et noyau stratifié utilisant un matériau magnétique, et procédé de production de matériau magnétique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS399904B1 (fr) * 1963-01-21 1964-06-08

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